Gas-heated stove.



J. E. KENNEDY.

GAS HEATED STOVE.

APELICATION FILED JULY 30. I915.

Patented July 4,1916.

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JAMES E. KENNEDY, OF WASHINGTON, DISTRICT OF COLUMBIA.

GAS-HEATED s'rovn.

Specification of Letters Patent.

Patented July a, role.

Application filed July 30, 1915. Serial No. 42,824.

To all whom it may concern.

Be it known that I, JAMES E. KENNEDY, a citizen of the United States ofAmerica, residing at Washington, District of Columbia, have inventedcertain new and useful Improvements in Gas-Heated Stoves, of which thefollowing is a specification.

This invention relates tostoves and has especial reference to anapparatus designed to automatically control the fuel supplyto gas heatedstoves.

A principal object of-the invention is to improve and simplify thegeneral construction of controlling'devices for stoves of thischaracter, and position the actuating mechanism away from the burnerblaze.

Asecond object of the invention, and also an important one, is toprovide means whereby vessels having difierently shaped bottoms may beseated over the burner of such a stove and at the same time produce thedesired supply of fuel by such heating.

A third important object of the invention is to provide a stove of thisdescription with a water jacket so arranged that the excess heat orWaste heat will be absorbed by the jacket.

A fourth important object of the invention is to provide a water jacketof this description wherein the major portion of the heat will beutilized for heating a vessel above the stove while the waste heat willbe utilized in the production of heat in a water jacket. I I

With the above and other objects in view, as will be hereinafter setforth, the invention consists in general of certain-novel features ofconstruction and combinations of parts hereinafter fully described,illustrated in the accompanying drawings and specifically claimed. I

In the accompanying drawings like characters of reference indicatelikeparts in the several views.

Figure 1 is a longitudinal section through a burner of a stoveconstructed in accordance with this invention. Fig. 2 is a top plan viewof such a burner and a portion of the stove surrounding the same. Fig.Sis a perspective view of the part arranged to turn or operate the valvein such a stove. Fig. ,4; is a perspective view of a lever arranged forconnection to the part shownin Fig. 3. Fig. 5 is an inverted perspectiveviewof'the support or actuating memberfor the valve control controlledby the vessel.

Referring more particularly to the several .figures shown in the drawingthere is provided a burner9 of the'general type used in gas stoves. Awater top is disclosed with an outer casing 10 having spaced therefrom awall 11 and a top 12 inclined downwardly to the center of the casing 10.This casing, wall and top form a water chamber 13 which is provided withan inlet 14 and outlet 15 so that water can be constantly circulatedthrough the chamber 13. Moreover, the casing. is provided, with acentrally arranged opening 16 aboutwhich are arranged flame openings 17and between these flame openings are the water circulating passages 18forming extensions inwardly of the chamber 13. Beneath this waterchamber is arranged the burner 9 which'consists of a main chamber 19having under the passage 18 perforations 20 for the escape. of the gaseswhen burning. This chamber 19 is supplied with a combustible mixture ofgas and air through a tube 21 which is supplied with gas through a tube22 provided with a cut oil" valve 23 and also with a mixing valve24.This mixing valve is controlled by a lever 25 whereto is connected oneend of a link 26 having its remaining end connected to one arm of a rockshaft 27 formed of a single length of rod. This rockshaft, indicated ingeneral at 27 and specifically shown in Fig. 4:, consists of a bodyportion 28 having an arm 29 terminating in an eye 30 which is connectedto the link 26 and also having an arm 31 from which extends a straightportion 32 terminating in a portion 33 extending at right angles to theportion 28 and having a hook 34: on its end. Thishook 34 engages theloop 35 of an actuating lever consisting of a single length ofrodwhereof the loop 35 forms the medial portion and from this loop 35extends a pair ofparallel arms 36 which are bent upward, as at, 37, topass through a rock shaft 38 journaled in lugs 38' on the rear wall ofthe casing, These arms pass through the rockshaft atright angles to theupwardly bent portions 37 and terminate in portions 39 which extendthrough a counterweight 10 shiftable on the arms for the purpose ofincreasing or decreasing the resistance desired. The body portion 28 ofthe s id rock shaft 27 is jo rna d horizo tally beneath two lugs 66carried inwardly of a forward flange 67 of the stove, while a retainingplate 68 is Secured to the lower face of the said 'lugs by screws 69;

Extending downward from the valve 24 is central opening 16 of theburner. In order accommodate either fiat, convex, or concaved to actuatethe lever formed by the arms 36 these arms are connected to a U-shapedloop 44 of inverted character and on the upper end of this loop iscarried a pin'or tube 45 having extending from one side thereof a lug46. On this pin or tube is seated a depressing element which extendsabove the upper surface of the stoveand consists of radial arms 47connected to a hub 48 having a series of slots 49 formed therearound,these slots being of different depths so that by lifting this member androtating the same to bring one or the other of said slots in alinementwith the lug 46 the depressing element may be arranged insuitably spacedrelation to the top of the stove and'thus bottom vessels when placedthereon.

In operation the stationary pilot light is at all times supposed tobeburning. After the member 48 has been adjusted for height aspreviously described, the vessel may be placed thereon and will depressthe member 44 and consequently actuate the lever 36,

so that as the latter turns about the axis of the axle 88 the valve 24will be actuated and the gas supply turned on. It is noted that all ofthe automatic operating means for the valve 24 including the elementsshown in Figs. 3, 4 and 5 are located entirely out of the path of theblaze from the burner 9.

For the purpose of controlling the escape of heat from one burner to anadjacent burner there is provided a damper 50 in one of the side wallsof the casing which is controlled by a headed rod 51 extending throughsaid casing. V

While the form of the invention herein shown and described is whatisbelieved to be the preferred embodiment thereof, it is nevertheless tobe understood that minor changes may be made therein without departingfrom the spirit and scope of the invention as claimed. 1

What I claim as new is 7 1. A stove comprising a grid, a burner 7 havinga mixingtube and positioned beneath the said grid, a valve for the saidburner, a rocking operating lever consisting of a single length of rodhaving a transversely arranged upstanding loop at the forward endthereof encircling the said mixing tube, operative connections betweenthe said loop and valve, and contacting means carried by the said leverand normally extending above the said grid, the said lever beingarranged entirely beneath the level of the burner top.

2. In a gas stove, the combination with a burner; of a cock forgoverning the supply of gas to the burner, and means controlled by theimposition of a cooking vessel there on for opening and closing saidcockysaid means including a lever provided intermediate its ends with anupstanding member terminating in a pin having a lug on one side thereofand a support rotatably mounted on the lug and provided with a spacedseries of slots of different depths, said slots engaging the lug toregulate the height of said member. 1

3. Ina gas stove, the combination with a burner; of a cock for governingthe supply of gas to the'burner, and meanscontrolled by the impositionof a cooking vessel thereon for opening and closing said cock, saidmeans including a lever provided intermediateiits ends with anupstanding member terminating in a pin having a lug on one side thereofand a support rotatably mounted on the lug and provided with a spacedseries of slots of different depths, said slots engaging the lug toregulate the height of said member, said member further consisting of acentral body wherein said slots are formed and downwardly inclinedradial arms.

4. In a device of the class described, the combination with a grid, of aburner mounted beneath said grid and provided'with an annular body and amixing tube, a gas supply pipe extending into the tube, a cock in saidgas supply pipe, a rock shaft mounted adjacent the front of the deviceand provided with a downwardly extending arm, a lever attached to saidcock to control the same, a link connecting said armand lever, aforwardly extending arm on said rock shaft provided with a hook at itsforward end, and an operating lever journaled at the rear of the deviceand operatively connected to said hook.

5. In a device of the class described, the combination with a grid, of aburner mounted beneath said grid and provided with an annular body and amixing tube, a gas supply pipe extending intothe tube, a cock in saidgassupply pipe, a rock shaft mounted adjacent the front of the deviceand provided with a downwardly extending arm, a lever attached to saidcock to control the same, a link connecting said arm and lever,

an inwardly extending arm on said rock shaft provided with a hook atitseinner end, a second rock shaft jou'rnal'ed at the rear of thedevice, a lever consisting ofa single length of rod having an upstandingloop at 'rearwardly extending portions lying beneath the tube and burnerand terminating in up wardly and rearwardly extending portions passingthrough the second rock shaft, and a counter-Weight carried by the lastmentioned portions of thelever.

6. In a device of the class described, the combination with a grid, of aburner mount ed beneath said grid and provided with an annular body anda mixing tube, a gas supply pipe extending into the tube, a cock in saidgas supply pipe, a rock shaft mounted adjacent the front of the deviceand pro vided with a downwardly extending arm, a lever attached to saidcock to control the same, a link connecting said arm and lever, aninwardly extending arm on said rock shaft provided with a hook at itsfree end, a second rock shaft journaled at the rear of the device, alever consisting of a single length of rod having an upstanding loop atone extremity engaged with the hook on the first mentioned rock shaftand embracing the mixing tube, said lever further comprising rearwardlyextending portions lying beneath the tube and burner and terminating inupwardly and rearwardly extending portions passing through the secondrook shaft, a counter-weight carried by the last-mentioned portions ofthe lever, and means controllable by the imposition of a vessel on thedevice for moving said lever.

7. In a device of theclass described, the combination with a grid, of aburner mounted beneath said grid and provided with an annular body and amixing tube, a gas supply pipe extending into the tube, a cock in saidgas supply pipe, a rock shaft mounted adjacent the front of the deviceand provided with a downwardly extending arm, a lever attached to saidcock to control the same, a link connecting said arm and lever,-

bracing the mixing tube, said lever further 1 comprising forwardlyextending portions lying beneath the tube and burner and terminating inupwardly and rearwardly extending portions passing through the secondrock shaft, a counter-weight carried by the last-mentioned portions ofthe lever, and means controllable by the imposition of a vessel on thedevice for moving said lever, said means comprising a support extendingupward through the burner from said lever and a vertically adjustablemember carried by the support.

8. A stove comprising a burner, spaced lugs forwardly positioned beneaththe said stove, a rock shaft having a horizontal portion engaging thesaid lugs, a supporting plate underlying the said body portion andsecured to the said lugs, a valve for the said burner, operativeconnections between the said shaft and valve, a second rock shaft journaled at the rear of the stove, a lever secured to the rearwardlypositioned rockshaft, and consisting of a single length of rod having aforward loop operatively connected to the first-named rock shaft, andmeans controllable by the imposition of a vessel upon the stove formoving the said lever.

In testimony whereof I afiix my signature.

JAMES E. KENNEDY.

Oopien of this patent my be obtained for in cents each, by addressingthe Commissioner of Patents, Washington, 1). ti.

